Point set topology is a disease from which the human race will soon recover.
点集拓扑学是一种人类将很快从其中恢复的疾病。
-- Henri Poincare 彭卡勒
Point set topology is a disease from which the human race will soon recover.
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Point set topology is a disease from which the human race will soon recover.
点集拓扑学是一种人类将很快从其中恢复的疾病。
-- Henri Poincare 彭卡勒
